| 稀土掺杂介孔TiO_2的合成与表征 |
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| 引用本文： | 邓凤萍,张文辉,董仲伟,王淑娟,桑琦.稀土掺杂介孔TiO_2的合成与表征[J].长春理工大学学报,2009,32(2):300-303. |
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| 作者姓名： | 邓凤萍 张文辉 董仲伟 王淑娟 桑琦 |
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| 作者单位： | 长春理工大学,材料科学与工程学院,长春,130022
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| 基金项目： | 国家自然科学基金，上海应用材料研究与发展基金 |
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| 摘 要： | 为提高介孔TiO2的光催化活性,实现其可见光响应,采用由PEG-1000和C16PyBr组成的混合表面活性剂,通过溶胶-凝胶法在室温下制备出了比表面积较大、孔径分布均匀和稳定性较好的掺杂稀土离子钐、镝和镨的介孔TiO2材料.以XRD、TEM、N2吸附-脱附分析、UV-vis和降解实验等表征方法对样品进行对比和分析,钐的引入使介孔TiO2的吸收强度明显降低;镝的引入使介孔TiO2的吸收强度有所提高,吸收边带有少许红移;错的引入使介孔TiO2的吸收强度有较大提高,吸收边带由原来的390nm红移到了420nm左右.镝和镨的最佳掺杂浓度均为0.6%.
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| 关 键 词： | 介孔TiO2 模板剂 稀土掺杂 催化活性 |
Synthesis and Characterization and of Rare Earth Doped Mesoporous TiO_2 |
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| DENG Fengping,ZHANG Wenhui,DONG Zhongwei,WANG Shujuan,SANG Qi.Synthesis and Characterization and of Rare Earth Doped Mesoporous TiO_2[J].Journal of Changchun University of Science and Technology,2009,32(2):300-303. |
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| Authors: | DENG Fengping ZHANG Wenhui DONG Zhongwei WANG Shujuan SANG Qi |
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| Affiliation: | DENG Fengping,ZHANG Wenhui,DONG Zhongwei,WANG Shujuan,SANG Qi (School of Materials Science , Engineering,Changchun University of Science , Technology,Changchun 130022) |
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| Abstract: | In order to improve the catalysts activity and realize visible-light responsive of mesoporous TiO2,the mixed surfactants composed by Cby PEG-1000 and C16PyBr were adopted. And Sm3+, Dy3+ and Pr3+ doped mesoporous TiO2 which has the high specific surface area, average pore and high thermal stability has been prepared by sol-gel method at room temperature. The mesoporous TiO2 and doped mesoporous TiO2 were characterized by the means of XRD, TEM, TG-DTA, N2 adsorption and desorption, UV-Vis and degradation exp... |
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| Keywords: | mesoporous TiO2 template rare earth-doping catalytic activity |
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